Bronzing machine



L. FALLER BRONZING MACH Aug. 21, 1951 INE 3 Sheets-Sheet 1 Filed June 2, 1948 I iNVENTOR LEOPOLD FALLER BY %/z:;

4.. ATTORNEY Aug. 21, 1951 FALLER BRONZING MACHINE 3 Sheets-Sheet 2 Filed June 2, 1948 wuwg INVENTOR LEOPOLD FALL ER BY ATTORNEY Aug. 21, 1951 FALLER 2,564,681

' BRONZING MACHINE Filed June 2, 1948 3 Sheets-Sheet 5 INVENTOR LEOPOLD FALLER ATTORNEY Patented Aug. 21, 1951 UNI TED s TAT BATE oenc BRONZING MAHINE LeopoldFaller, Brooklyn, N. Y. Application-June 2, 1948, Serial No. 30,679

10 Claims. (C1,: 91-59) This invention-relates.to an applying machine, and more particularly tease-calledbronzing nachine r app y n pow e s and s ec a l m tallic powders to the faces of sheets.

An object of the present invention-is to provide a bronzing machine equipped with asystem for auperfect removal and-collection o-f-excess powder from the interior of :the machine.

A further-object of the presentinvention is to provide-a bronzing machine, which deliversthe coated sheets insuch-a condition that they do not requirean after-cleaninge-treatment.

Another object-fthe presentinvention, is to improve on the-construction of bronzing, machines as now ordinarily made.

With'theabove and. other objectsofthe invention in. view, the... inventionconsistsdnthe novel construction, arrangement and combination of variousdevices, elements and p.arts, .asset forth in the claims hereof, a certain embodiment of the same being ,described. in the specification and being illustrated .in the. accompanyingdrawings forming part of this specification, wherein:

Fig. 1 is an isometric view of a bronzing machine. according. to. the invention, some parts being broken away,

Fig. 2 is a side elevationalyiew. of the .bronzing machine seen in the direction of the arrow-2 of Fig.1, some parts being broken away, and

Fig. 3 .is an endelevational view of the bronzing machine seen in the direction of the arrow 3 of Fig. 1, some parts being broken away.

Referring now to the drawings, V I0 generally indicates the supplying or depositing section of a bronzing machine, l2generally indicates the coating section of the'bronzing machine'and' l4 generally indicates the cleaning section of the bronzing machine. Said sections l0, I2 and [4 may be of any desirable construction; in principle; for example, they'may be of the construction shown in the drawingsand described more particularly in my co-pending application relating to a bronzing machine Serial #21,478' filed on April 16, 1948.

In'the supplying section Hl'metallic powder, for example; bronze powder is supplied by a supply roller 16 to the sheets to be coated and fed to the machine by asuit'able conveying band I 8; In the machine, the sheets to be coated are placed on the carrying surface 20 of a conveying belt generally indicated by 22,- which transportsthe sheets through thecoating section I2 and through the cleaning section M.

The conveying belt 22 trained around rollers J'ournalled. inv suitable bearings of the-machine is driven-by the driving motor 24-(see Figs. 2 and 3-) through the medium ofa belt drive 26; arotatabl shaft 28 (see Figs. 1 and. 3) and meshing bevel gears30; 32.-

In the coatingssction l2 thesheetscarried by. the carrying surface of the conveying. belt 22 are coated with the metallic powder and" the coated surfaces are burnished by a series of. reciprocating burnishers l8; Theburnishers .lflfare reciprocatedin .a direction. transversely. of the movement of the sheets through the machine by means of a. suitable mechanism (not shown) driven by the motor 24.

In the cleaning. section 14 excess metallic powder is removed from the sheets carried by the conveying belt 22by means of'a, series of moving endless dusting bands 34 (see Figs. 1 and 3.). The dusting bands 34 trained around suitable rollersand pulleys are moved in adirection transversely-of, the movement of th'eisheets carriedv by, the conveying belt 22 by means of the driving motor through the medium of'the belt .driye 2 6"and a gear drive (not shown).

Dust carried along by the moving" dusting bands 34 is removed therefrom by'means of. a, series of rotary brushesv 36;"cooperating with said dusting-bands In the embodiment shown in the drawings, three rotary brushes '36 are arranged on each side ofthe machine; th'e'drawings, however, show only one'such series of'three rotary brushes. The rotary brushes 35" shown in the drawings. are keyed tothe shaft 28"driven by thedrivi'ngmot'or 24' through the medi'umof thebeltdrive 261" In accordance with the invention", acompartment, 38 is arranged within the cleaning. chamber 40ofthe cleaning section" 14 in the upper part thereof above-the carrying surface'20fofthe conveying belt 22' and above thedusting' bands 34. The compartment 38- extends substantially through the entire length of the cleaning chamber; but it is smallerin width'than the-cleaning' chamber 40'; The compartment 38 communicateswit h the cleaning chamber' ilithrough a series of'slots 42, 44, 46-;arranged'in its side wall--48; bottom 50 and side wall 52 respectively. Furthermore, said compartment" 38 communicates: with the upper portion of the burnishing chamber'ilof the coating section l2 through a series of slots-5B arranged in the front wall of said compartment 38i Moreover; a nozzle chamber 58 having its mouth adjacent and above the-carrying surface 20' of *the'conveying belt- 22' at the delivery end of the machine communicates with the interior of said compartment 38 through an opening 60.

A conduit 62 communicating with the interior of the compartment 38 leads to the intake of a suction-creating means or fan 64 driven by a fan motor 66 through the medium of a belt drive 68. An exhaust collector or container is connected with the outlet of said fan 64 by means of a pipe 12..

Furthermore, on each side of the machine a funnel-like body 14 is arranged in the cleaning section l4. The upper open end of each funnel 14 is arranged below the plane of the carryin surface 20 of the conveying belt 22 and below the rotary brushes 36. The other end of each funnel I4 is connected through a duct "I6 with the intake of the fan 64.

Moreover, on each side of the machine a chute 18 is arranged in the cleaning section 40. The upper open end of each chute 18 communicating with the interior of the chamber 40 of the cleaning section I4 is arranged below the dusting bands 34. A dust-collecting box 80 is removably attached to the lower end of each chute 18.

Furthermore, in the coating section [2, a, channel 82 is arranged on each side of the machine. The upper end of each hollow channel terminates at the side of the conveying belt 22 somewhat below the carrying surface 20 thereof. The lower end of each channel 82 is arranged in such a manner that dust passing through said channel 82 may drop into a dust collecting container 84 removably mounted on the machine.

During the operation of the machine, excess bronze powder is removed from the sheets placed on the conveying belt 22 by the reciprocating burnishers I8 as well as by the moving dusting bands 34. A portion of the excess powder thus removed from the sheets will drop by gravity into the channels 82 and the chutes 18, which lead the excess powder into the collecting containers 82 and into the collecting boxes 80 respectively. However, not all of the excess powder will reach the channels 82 and chutes 18. A considerable portion of the excess powder will be stirred up by the reciprocating burnishers l8 and by the moving dusting bands. 34 and by the rotating brushes 36 cleaning the dusting bands 34. This stirring up of excess bronze powder will cause a dust accumulation in the burnishing chamber 54 and in the cleaning chamber 40. The dust will have the tendency to accumulate in the upper portion of said chambers 54 and 40. Furthermore, there Will be the tendency of an increased accumulation of dust at the delivery end of the machine.

Said dust accumulations are preferably removed by the vacuum system according to the invention. As indicated by arrows in the drawings, the dust stirred up by the burnishers l8 in the burnishing chamber 54 will enter through the slots 56 the compartment 38 and, likewise, the dust stirred up by the dusting bands 34 in the cleaning chamber 40 will enter through the slots 42, 44 and 46 the compartment 38. Moreover, the dust accumulating at the delivery end of the machine will enter through the nozzle chamber 58 the compartment 38. The fan 64 connected to said compartment 33 by the conduit 62will suck in the dust from the compartment 38 and discharge same into the exhaust collector Ill.

Furthermore, dust thrown off by the rotary brushes 36 will be sucked in by the fan 54 through the ducts I4, 16 and will be, likewise, discharged 4 by the fan into the exhaust collector 10. The dust accumulation in the exhaust collector 10 may be removed therefrom after opening a cover or lid (not shown) and may be used again in the machine as fresh supply powder.

Owing to the removal of the dust accumulation by the vacuum system according to the invention being effective over substantially the entire length of the machine and being especially effective in the upper portion of the burnishing chamber 54 and cleaning chamber 40 as well as at the delivery end of the machine and adjacent to the rotary brushes, the coated sheets are delivered by the machine in such a clean condition that it is unnecessary to subject same subsequently to a further cleaning treatment.

I have described a preferred embodiment of my invention, but it is understood that this disclosure is for the purpose of illustration and that various omissions or changes in shape, proportion and arrangement of parts as well as the substitution of equivalent elements for those herein shown and described may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

What I claim is:

1. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a 3 series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creating means having an inlet and an outlet, a conduit leading from the upper portion of said cleaning chamber from a place above the plane of said conveying means to the inlet of said suctioncreating means, and an exhaust collector attached to the outlet of said suction-creating means.

2. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creatin means having an inlet and an outlet, a conduit leading from the upper portion of said burnishing chamber from a place above the plane of said conveying means to the inlet of said suctioncreating means, and an exhaust collector attached to the outlet of said suction-creating means.

3. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creating means having an inlet and an outlet, a conduit leading from the upper portions of said burnishing chamber and of said cleaning chamber from places above the plane of said conveying means to the inlet of said suction-creating means, and an exhaust collector attached to the outlet of said suction-creating means.

4. In a bronzing machine as claimed in claim 1, a nozzle chamber having a mouth adjacent the carrying surface of said conveying means at the delivery end of the machine, said nozzle chamber communicating with the inlet of said suctioncreating means.

5. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power-driven suction-creating means having an inlet and an outlet, a conduit leading from the upper portion of said cleaning chamber from a place above the plane of said conveying means to the inlet of said suctioncreating means, a duct leading from the lower portion of said cleaning chamber from a place below the plane of the carrying surface of said conveying means to the inlet of said suctioncreating means, and an exhaust collector attached to the outlet of said suction-creating means.

6. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creating means having an inlet and anoutlet, a conduit leading from the upper portion of said cleaning chamber from a place above the plane of said conveying means to the inlet of said suction-creating means, a duct leading from the lower portion of said cleaning chamber from a place below the plane of the carrying surface of said conveying means to the inlet of said suctioncreating means, an exhaust collector attached to the outlet of said suction-creating means, a chute, and a dust collecting box, said dust collecting box being attached to one end of said chute, the other open end of said chute extending into said cleaning chamber.

7. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creating means having an inlet and an outlet, a conduit leading from the upper portions of said burnishing chamber and of said cleaning chamber from places above the plane of said conveying means to the inlet of said suction-creating means, a duct leading from the lower portion of said cleaning chamber from a place below the plane of the carrying surface of said conveying means to the inlet of said suction-creating means, an exhaust collector attached to the outlet of said suction-creating means, a chute, a dust collecting box, said dust collecting box being attached to one end of said chute, the other open end of said chute extending into said cleaning chamber, a, channel, and a dust collecting container, said dust collecting container being attached to one end of said channel, the other open end of said channel extending into said burnishing chamber.

8. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and 'with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creating means having an inlet and an outlet, a compartment arranged within said cleaning chamber above said conveying means, passages connecting the interior of said compartment with the interior of said cleaning chamber above the plane of said conveying means, a, conduit leading from said compartment to the inlet of said suction-creating means, and an exhaust collector attached to the outlet of said suctioncreating means.

9. In a bronzing machine as claimed in claim 8, a nozzle chamber having a mouth adjacent the carrying surface of said conveying means at the delivery end of the machine, said nozzle chamber communicating with the interior of said compartment.

10. In a bronzing machine equipped with a coating chamber containing a series of burnishing means, with a cleaning chamber containing a series of cleaning means, and with conveying means arranged for transporting sheets through said coating chamber and said cleaning chamber, in combination: power driven suction-creating means having an inlet and an outlet, a compartment arranged within said cleaning chamber above said conveying means, passages connecting the interior of said compartment with the interior of said cleaning chamber above the plane of said conveying means, a conduit leading from said compartment to the inlet of said suction-creating means, at least one duct leading from the lower portion of said cleaning chamber from a place below the plane of the carrying surface of said conveying means to the inlet of said suction-creating means, and an exhaust .collector attached to the outlet of said suctioncreating means.

LEOPOLD FALLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,136,623 Smith Apr. 20, 1915 1,566,800 MacArthur Dec. 22, 1925 1,772,318 Lontke Aug. 5, 1930 1,846,547 Ferneding Feb. 23, 1932 2,285,650 Faris et al. June 9, 1942 

